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Video feature: 'Polymers' .

What are polymers, anyway? With the help of local middle school students, Princeton faculty members and graduate students give a hands-on explanation of these long-chain molecules in the "Polymers" video, recorded at the University's 2010 Science and Engineering Expo.

Video feature: 'Discover Princeton Environmental Institute' .

Stephen Pacala, director of the Princeton Environmental Institute, provides a visual tour of the University's interdisciplinary center for environmental research, education and outreach. In this video Pacala discusses the institute's mission, world-class faculty, interdisciplinary research and unique educational opportunities, including internships.

All-day expo enlivens science for hundreds of middle school children .

A high-energy mix of fun and science characterized the University's Science and Engineering Expo on Thursday, March 17. More than 900 children from 11 local middle schools streamed through Icahn Lab, McDonnell Hall, Frick Lab and the Friend Center to participate in scores of demonstrations and hands-on activities designed to engage them in subjects from biology to astrophysics.

Middle schoolers explore wonders of science and engineering .

The door to the tiny room in Princeton's Icahn Laboratory closes, and darkness covers everyone inside: Ben Tiede, a dozen middle school students and one mouse. "OK, what color is the Incredible Hulk?" asks Tiede, a graduate student in Princeton's molecular biology department. "Green!" several voices respond. With that, Tiede shines a blue flashlight into the cage on the table, and the mouse lights up like a green neon sign.

Video feature: Laser work informs Shepard's study of polymer materials .

Kimberly Shepard, a doctoral student in Princeton's Department of Chemical and Biological Engineering, is studying the behavior of polymer glasses, materials that do not have a crystal structure.

Student work: Mas Flow Dance Company .

Mas Flow is a student-run dance company performing various styles of Latin dance for audiences both on and off campus. With an all-are-welcome policy, they invite students to come dance, enjoy themselves and be a part of an easygoing group.

Employee retirements: December 2018 .

An updated list of University employee retirements, as of December 2018.